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Species: Camponotus (Myrmobrachys) striatus   (Smith, 1862) 

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Taxonomic History (provided by Barry Bolton, 2023)

Formica striata Smith, 1862b PDF: 30 (w.) PANAMA. Neotropic. Primary type information: Primary type material: holotype (?) worker. Primary type locality: Panama: (no further data) (R.W. Stretch). Primary type depository: BMNH. Type notes: No indication of number of specimens is given. AntCat AntWiki HOL

Taxonomic history

Emery, 1894l PDF: 62 (s.); Menozzi, 1927d PDF: 340 (q.m.).
Combination in Camponotus: Emery, 1892c PDF: 167.
// Distribution


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Argentina, Colombia, Costa Rica, El Salvador, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Venezuela
  Biogeographic regions (According to curated Bioregion/Taxon lists):

Distribution Notes:

Mexico to Colombia, ?Brazil: RJ. Costa Rica: possibly throughout the country but seems to have a somewhat patchy distribution.


Natural History:

I have many records of this species from around Monteverde in the Cordillera de Tilaran. I also have records from the Cordillera de Guanacaste (Cerro Cacao, Maritza, and Pitilla), Carara, and Manuel Antonio. I collected it in Parque Nacional in the middle of the capital city, San Jose. On the Atlantic slope, I have records from Hitoy Cerere and La Selva Biological Station. In spite of abundant collecting, I never encountered the species in Corcovado National Park. At La Selva, it seems to be very rare. Henry Hespenheide collected it once in 1988 and again in 1992. The latter collection was from vegetation reachable from the suspension footbridge across the Rio Puerto Viejo. The species has not been collected again, in spite of extensive inventory work at La Selva.

This is a tiny Camponotus species that usually lives in very open habitats. It often nests in very narrow-guage dead herb and vine stems, and I usually encounter them along weedy road margins or pasture edges. I have found nests in dead stems down to 3mm outside diameter, in various dead branches in low scrubby vegetation, in dead herb stalks along roadsides, in dead thorns of Acacia ruddiae, and in dead nodes of Cordia alliodora. A cluster of dead composit stalks contained a nest with only workers in a section of 12mm diameter stem, and workers and brood in a nearby hollow stem gall. This suggests they can be polydomous. I have often found single queens in nests, but in one case I found four dealate queens in a nest collection, so it appears they can be monogynous or polygynous.

Camponotus striatus has a strong foetid odor, like army ants. When nests are disturbed and workers are collected into alcohol the odor is easily detected. I have not noticed a foetid odor in any other species of Camponotus. These "ecitonine" odors occur sporadically in other ants (e.g. Pheidole fallax, various other Pheidole species). It has been hypothesized that these odors might be an evolved defense against army ants, and that the odors somehow repel army ants or disrupt their raiding behavior. Another possibility is that it repels attacks by various other ants that have evolved to flee from ecitionine odors.


Smith, F. 1862. Descriptions of new species of aculeate Hymenoptera, collected at Panama by R. W. Stretch, Esq., with a list of described species, and the various localities where they have previously occurred. Trans. Entomol. Soc. Lond. (3)1:29-44.

Specimen Habitat Summary

Found most commonly in these habitats: 7 times found in mixed tropical/temperate mesic forest, 3 times found in moist forest, 4 times found in montane rainforest edge, 5 times found in mesophil forest, 3 times found in 2º lowland rainforest, 5 times found in ridgetop cloud forest, 3 times found in roadside vegetation, 2 times found in Weedy second growth along stream edge, 1 times found in 2ndary liquidambar forest, 1 times found in second growth mesophyl forest, ...

Found most commonly in these microhabitats: 20 times beating vegetation, 11 times on low vegetation, 6 times ex sifted leaf litter, 5 times ex dead twig, 3 times In dead herb stalk, 4 times sweeping, 1 times ex dead stick hanging from vine, 2 times ex dead branch, 1 times nest in dead stem Myriocarpa, 3 times Malaise trap, 4 times at bait, ...

Collected most commonly using these methods: 22 times Beating, 19 times search, 6 times sweeping, 3 times hand collecting, 3 times miniWinkler, 3 times Malaise, 4 times Red de golpeo, 3 times Baiting, 2 times beating low vegetation, 1 times beating vegetation (1 hour), 1 times beating vegetation (2 hours), ...

Elevations: collected from 20 - 1990 meters, 940 meters average

Collect Date Range: collected between 1911-12-01 00:00:00.0 and 2022-01-15 00:00:00.0

Type specimens: Holotype of Camponotus striatus: casent0903642; syntype of Camponotus alfaroi: casent0916613; syntype of Dolichoderus granulatus: castype00606

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